Sometimes when the music is really good, and the sound is really loud, and the pill is really potent, you can see what you hear. But that's just brain tricks. This, however, is real and mesmerising. Watch how different audio frequencies can create mind blowing visual patterns. It's a kaleidoscope of sound.
It's basically a more visually hypnotic version of the Chladni plate experiment. Essentially, sand is poured onto a plate attached to a speaker. When the speaker plays a certain frequency, the sand naturally moves to areas where there is the least amount of vibration. Each frequency has its own pattern. You get to see the wonderful hidden patterns of each frequency that get more complex the higher you go. It's beautiful. Like watching a ballet of sand. [Brusspup]